Battery replacement for Mi 8

[najabi]

This thread is dedicated to discuss options for battery replacement of our Mi 8, which is BM3E model, 3300/3400mAh.
You can get a original copy, a Nohon or Lehehe on Aliexpress. The most popular seems to be the Nohon, though the Lehehe is reported to have more capacity (4.000mAh, though in practice somewhat less). The original battery is sometimes found.

Original battery for 8.79$ on Witrigs
Lehehe 4.000MAh on Aliexpress for 14,50€
Lehehe 3.400mAh on Aliexpress for 13,32€
Nohon 3.400mAh on Aliexpress for 15,84€
Nohon 3.400mAh on Aliexpress for 21€

 

[Flawn]

That looks pretty interesting

 

[catalindobre]

Does it fit inside the MI8?

 

[najabi]

Does it fit inside the MI8?

They should, sice they're listed as Mi 8 compatible, and according to the pictures they appear the same size.

 

[Wachupe2]

According to a video to change the battery, the connector of the 4000 battery is shorter, I do not know if it will work

 

[najabi]

According to a video to change the battery, the connector of the 4000 battery is shorter, I do not know if it will work

True, unless you flipped it over, but still it doesn't seem to fit or be the same connector.
Curious, because all four different links must be wrong then.

 

[Tyrigi]

This is very interesting... Nobody tried yet?

 

[oyu9527]

the battery size are not the same
and also dont trust any battery with same size but claim have higher capacity, energy density is a constant, 3400 maybe possible, 4000mah is not.
mi8 77.58 x 62.56 x 3.75mm
bn47 for redmi4 79.50 x 59.44 x 4.74mm

 

[Stoffl_]

what he said

>implying the mAh rating of some random chinese battery seller on ebay could ever be trusted

 

[gbzr]

where to find genuine battery for mi 8? i'm playing too much game and it will be dead soon :crying:

 

[engr.chachi]

Thanks for sharing.

 

[najabi]

A new 3800 mAh battery for Mi 8 has appeared in Aliexpress:
Details in O.P.
WONKEGONKE 3800mah BM3E For Xiaomi Mi 8

 

[MehmetNY]

If anyone tries, please share his experience.

 

[xXSantyXx]

Did actually anyone changed it's battery and re glued the original back cover with success? I am searching for a new battery and i'm looking for the best way to glue the back cover yet, idk if it is going to glue well if i just use another adhesive or if i just have to buy another back cover with adhesive on it. I want my genuine back cover not a cheap one.
I am looking for the best method, preferably using european shop, but china is okay. Anyone can help me?

 

[najabi]

Did actually anyone changed it's battery and re glued the original back cover with success? I am searching for a new battery and i'm looking for the best way to glue the back cover yet, idk if it is going to glue well if i just use another adhesive or if i just have to buy another back cover with adhesive on it. I want my genuine back cover not a cheap one.
I am looking for the best method, preferably using european shop, but china is okay. Anyone can help me?

Here you can find original replacement parts:
https://www.witrigs.com/replacement-parts-for-xiaomi-mi-8

 

[xXSantyXx]

Here you can find original replacement parts:
https://www.witrigs.com/replacement-parts-for-xiaomi-mi-8

It's out of stock, both the battery and the sticker. Btw where does this ship from?

 

[najabi]

It's out of stock, both the battery and the sticker. Btw where does this ship from?

It seems to come from China. There is compatible back-cover replacement sticker available as of now.

 

[caputcha]

A new battery for Mi8
4350mAh BM3E
https://s.click.aliexpress.com/e/bHMdJGm8

anyone could confirm if this working ?

 

[MehmetNY]

A new battery for Mi8
4350mAh BM3E
https://s.click.aliexpress.com/e/bHMdJGm8

anyone could confirm if this working ?

It's not a Li-polymer.
wrote as Li-ion battery.

Maybe you don't know that: POLYMER-based batteries last longer, while ION-based batteries are shorter in life.

 

[jimac]

It's not a Li-polymer.
wrote as Li-ion battery.

Maybe you don't know that: POLYMER-based batteries last longer, while ION-based batteries are shorter in life.

erm.... that's not how I understand it. Can you explain how that works to me?
as far as I knew, it just relates to the polymer bag the parts are in. It's a Li-on in a polymer bag.

watch this vid:-
https://www.youtube.com/watch?v=twwg3uRRNxE